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authorBrian Quinlan <brian@sweetapp.com>2014-05-17 13:51:10 -0700
committerBrian Quinlan <brian@sweetapp.com>2014-05-17 13:51:10 -0700
commit20efceb75790f2a40fad449fd92a6b3d8fe40c8b (patch)
treef40a8391cb82646bfc6a26ae857a461732ac6dfa /Lib/concurrent/futures/process.py
parent120e8edfb8b0e477dbe351c14e18803301df48ac (diff)
downloadcpython-git-20efceb75790f2a40fad449fd92a6b3d8fe40c8b.tar.gz
Issue #21362: concurrent.futures does not validate that max_workers is proper
Diffstat (limited to 'Lib/concurrent/futures/process.py')
-rw-r--r--Lib/concurrent/futures/process.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/Lib/concurrent/futures/process.py b/Lib/concurrent/futures/process.py
index 07b5225d1d..12993901e3 100644
--- a/Lib/concurrent/futures/process.py
+++ b/Lib/concurrent/futures/process.py
@@ -334,6 +334,9 @@ class ProcessPoolExecutor(_base.Executor):
if max_workers is None:
self._max_workers = os.cpu_count() or 1
else:
+ if max_workers <= 0:
+ raise ValueError("max_workers must be greater than 0")
+
self._max_workers = max_workers
# Make the call queue slightly larger than the number of processes to